CN103761555A - Image anti-counterfeiting recognition method applied to motor vehicle driving licenses - Google Patents
Image anti-counterfeiting recognition method applied to motor vehicle driving licenses Download PDFInfo
- Publication number
- CN103761555A CN103761555A CN201310720607.2A CN201310720607A CN103761555A CN 103761555 A CN103761555 A CN 103761555A CN 201310720607 A CN201310720607 A CN 201310720607A CN 103761555 A CN103761555 A CN 103761555A
- Authority
- CN
- China
- Prior art keywords
- motor vehicle
- vehicle driving
- driving license
- image
- information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Credit Cards Or The Like (AREA)
Abstract
The invention discloses an image anti-counterfeiting recognition method applied to motor vehicle driving licenses. Essentially, the method relates to figures with stored information, the figures are solidified on the surfaces of the motor vehicle driving licenses in a printing or typewritten mode, and solidification marks with anti-copying and anti-cracking functions can be finally obtained. The marks are printed or typewritten in a high-precision mode so that a large amount of information can be stored within the smallest area. The anti-counterfeiting marks are further characterized in that the marks can be recognized through recognizing instruments and the anti-counterfeiting information stored in the anti-counterfeiting marks can be extracted; anti-counterfeiting information stored in encoded images can be self-defined according to application requirements. The image anti-counterfeiting recognition method mainly solves the problems relevant to true and false identification of the motor vehicle driving licenses and driver information verification, and it can be ensured that the motor vehicle driving licenses are safe and reliable for driver controlling and querying systems.
Description
[technical field]
The present invention relates to a kind of image false-proof recognition methods, especially a kind of image false-proof recognition methods that is applied to motor vehicle driving license.
[background technology]
Along with automobile is as the day by day a large amount of life that enters society of a kind of ordinary consumption product, automobile more and more comes across in people's life as a kind of common vehicles.The effective identity document of one that motor vehicle driving license is driven qualification as confirmation driver is also more for various aspects.Because motor vehicle driving license is the necessary certificate that citizen drives a car, it has represented the approval of country to driver's driving ability.Simultaneously in driver's license, integrated a large amount of driver informations, can authority, easily and efficiently to driver serve, management and control, inquiry.Therefore, do not have the citizen of driver's license not have qualification to drive a car to set out on a journey to travel.But due to a variety of causes, some people can not obtain or not obtain temporarily motor vehicle driving license, or some driver is for the needs of hiding real information, can remove through various channels to buy false driver's license.Once a large amount of false motor vehicle driving licenses appear in society, will be great risk so for highway driving system.
Based on more than, the false proof of motor vehicle driving license is a very important primary demand.But, passed through long development, at present, existing false proof means can not meet the false proof demand of motor vehicle driving license completely.And due to the feature of motor vehicle driving license itself, can not take volume excessive or hold damageable false proof mode, what take is generally the false proof mode of antiforge or special material, mainly contains following several:
(1) sytlized font
English Translation below " People's Republic of China's motor vehicle driving license " this line inscribed, what " a " in last phrase " China " adopted is sytlized font, with magnifier, amplifies and just can see, this font is very special;
(2) laser anti-fake figure mark of plastic packaging
There are the printed words of China, CHINA, driver's license, DRIVINGLICENSE in upper right side, at light downside, sees obviously; There is an obvious pentagram lower right, and laser pentagram can be pressed on photo;
(3) letter is contained in the seal of lower left corner red color the inside, must use under magnifier and just can see clearly;
(4) decorative pattern on driver's license sub-page and the decorative pattern on driver's license, can be stitched together up and down, the decorative pattern having formed;
(5) metal wire.There is metal wire on right side, the driver's license back side, and also there are word and letter in metal wire the inside;
(6) bar code.Bar code on driver's license sub-page has uniqueness.
According to above false proof means, multiple false proof means use, have certain anti-counterfeit capability, but the characterization that above most false proof means are all the sense organs based on people to be done is false proof, and the false proof standard that neither one quantizes.And people's sense organ accepts there is no absoluteness, so this just gives fake producer with opportunity.Meanwhile, these above false proof means all do not have too high technical threshold, have a lot of anti-counterfeiting technologies to belong to the technology that can get in common social channel.Wherein can carry out information extraction with quantitative criteria, judge that the false proof means of the true and false are the application of one dimension code, but the problem that one dimension code exists in use procedure is because printing precision is lower, be to occur in a kind of mode of plain code, by the mode of simple duplicating or scanning, can copy.Therefore, the false proof situation of motor vehicle driving license allows of no optimist.
Method disclosed by the invention provides directly anti-counterfeiting information has been implanted in to the method in anti-fake mark, and by the parsing of identification equipment, anti-counterfeiting information is extracted with certificate content and mutually compared.This invents the true and false criterion that a kind of quantification is provided for user, and meanwhile, these false proof means have higher technical level, are difficult to be imitated and copy, and therefore have high anti-counterfeiting performance, have solved the false proof drawback of current motor vehicle driving license.
[summary of the invention]
Fundamental purpose of the present invention is to provide the image false-proof recognition methods that is applied to motor vehicle driving license.According to the specific demand in the false proof field of motor vehicle driving license, the present invention can meet the implantation to anti-counterfeiting mark and identification demand under specific application environment, by the combination of the coded image anti-counterfeiting technology that is difficult to copy, scan and information extraction, comparison, realize the true and false judgement to motor vehicle driving license simultaneously.Simultaneously, because technology disclosed by the invention both can have been used visible material under natural light scope and carried out solidifying of coded image, also can use sightless material under natural light scope to be cured coded image, therefore the anti-counterfeiting mark, being solidify to form by coded image has the feature that copies, copy of being difficult to.The consideration of copying difficulty and the best visual effect based on storage information, raising, the method disclosed in the present needs high-precision printing or printing technique, and under these technical conditions, the ink point mark that diameter is 30 microns substantially can not be by the discrimination of naked eyes institute.Due to high-precision design, this invention can be implanted a large amount of information under small size simultaneously.When generating electrical patterns, by the rule of arranging of software systems control image lattice, required self-defining information is stored among image.Under this kind of technical conditions, dot pattern can be realized recognition effect in the situation that minimum area reaches 3*3 square millimeter.
In the process of Information Embedding, can carry out according to the content of motor vehicle driving license direct generation and the implantation of anti-counterfeiting information, after generating specific coded image, according to above-mentioned printing or printing, require to carry out solidifying of anti-counterfeiting mark, directly implant motor vehicle driving license surface.
Motor vehicle driving license surface can be identified it by authentication equipment after implanting coded image, and after authentication equipment grabs image, equipment is analyzed it, and extracts canned data in image by computing.Report afterwards the man-machine interaction signal that can be identified by people, to reach user's obtaining information, and the effect judging.If report information and motor vehicle driving license content match each other, illustrate that this motor vehicle driving license is true, if identification equipment can not recognition coding image or report information be not inconsistent with motor vehicle driving license, this certificate is vacation.
The invention provides the image false-proof recognition methods that is applied to motor vehicle driving license, this invention is comprised of two major parts, it is characterized in that:
Part I is mainly generation and the information storage of setting forth coded image.
Known to aforementioned content, coded image battle array provided by the invention is comprised of the two dimensional image with certain arranging rule.
Above-mentioned coded image is generated by Software tool, and arranges according to certain rule.Under certain rule of arranging, can generate the coded image of the different arrangement modes of concrete huge amount.
Above-mentioned coded image is stored different information according to different arrangement modes.In Software Create coded image according to specifically arranging storage relevant information.
Part II is that the coded image that is implanted to motor vehicle driving license is identified, and extracts wherein canned data.Simultaneously according to reporting information out and the content of motor vehicle driving license, do matching judgment, to judge the true and false of certificate.
Accompanying drawing explanation
The process flow diagram that carries out anti-counterfeiting mark triggering by identification instrument that Fig. 1 provides for the embodiment of the present invention.
The basic composition exemplary plot of the coded image that Fig. 2 provides for the embodiment of the present invention.
Fig. 3 is schematic flow sheet of telling truth from falsehood provided by the invention.
Main figure number explanation.
101-motor vehicle driving license 102-anti-counterfeiting mark 103-differentiates instrument.
?
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the image false-proof recognition methods that is applied to motor vehicle driving license that the embodiment of the present invention is provided is described in detail.
The image false-proof recognition methods that is applied to motor vehicle driving license that the embodiment of the present invention provides, as shown in Figure 1, the mode that comes into force that it is overall is as follows:
Generation to image lattice in said process below and storage information are elaborated:
For the generation of coded image, as shown in Figure 2, include but not limited to the coded image of this latticed form.Can be the lattice structure image shown in Fig. 2, can be also one dimension code, Quick Response Code this type of can store the coding structure of information.Take the lattice structure image shown in Fig. 2 as example, its structural form is comprised of a series of graphical dots with specific standard.Under certain coding rule, after this graphical dots composition image lattice, can represent different meanings according to the difference of arrangement mode, thus the information of storage certain capacity.When generating coded image, can carry out according to demand the storage of information, thereby reach the object of mating with motor vehicle driving license.
The fundamental mechanism of above-mentioned storing information is by under the arrangement mode in certain standard, according to the concrete arrangement mode of difference, gives specific ID assignment, thus corresponding different storage information.
As shown in step 201, the complete information storage unit of this diagrammatic representation coded image.
As shown in step 202, this mark is the fundamental point mark unit of composition coded image.
Coded image in example is as shown in Figure 2 taked high precision mode, and this kind of setting means can be stored information with greater efficiency in unit area.The diameter of the fundamental point mark unit in the coded image generating is 30 microns.Under this kind of technical conditions, a complete information memory cell area is 0.7*0.7 square millimeter.For the effect that guarantees that breakage-proof and image comparison are confirmed, authentication equipment need to capture 4 complete storage elements that left and right is same.Therefore as long as effective printable area is not less than 3*3 square millimeter and can effectively implants anti-counterfeiting mark.
As mentioned above, coded image is the electrical patterns by Software Create, and this electrical patterns is to be generated by tool software.Determining after coded image, the actual electrical patterns generating can, according to the identification demand of motor vehicle driving license, strengthen or reduce in the mode that repeats increase or minimizing complete information storage unit.Therefore, embodiment disclosed by the invention can regulate size as required.
Meanwhile, known as shown in Figure 2, an independent complete information memory cell, how many its storage capacities decides according to picture point in this storage unit.If increase the independent information memory cell area of can arranging, can increase the picture point in this information memory cell, just can increase in such cases the anti-counterfeiting information storage capacity of coded image.
Except the coded image of the latticed form shown in Fig. 2, the present invention is also contained other can Image Coding mode store the anti-counterfeiting mark of information.The coded image that stores motor vehicle driving license information carries out the storage of certificate information according to the information storage capability of self.
More than about the generation of Part I coded image and the elaboration of information storage, complete whole running application of the image false-proof recognition methods that is applied to motor vehicle driving license, also need the coded image that is implanted to motor vehicle driving license to identify, and extract the wherein step of canned data.
The process of above-mentioned coded image production and storage information is the generation of electrical patterns, and the coded image of electronization also need to solidify the surface in motor vehicle driving license with printing or the mode of printing.
Under printing condition, by the process of plate-making, electrical patterns is replicated in coded image on forme, afterwards by the printing of printing equipment, coded image is presented on to motor vehicle driving license surface in the mode of ink point mark.
Under print conditions, the electrical patterns of coded image is connected with printer by computer end software for composing, by the mode of printing, coded image is directly solidified in motor vehicle driving license surface.
Because identification equipment is only effective to the peculiar spectrum infrared ray under non-visible light range, therefore can only identify the pattern that peculiar spectrum infrared light forms.Under this kind of optical condition, no matter be printing or printing, solidify in the coded image on motor vehicle driving license surface and all need to solidify coded image with the material that can absorb peculiar spectrum infrared light.
Due to the optical characteristics of carbon containing black ink, can absorb visible ray and also can absorb infrared light.Therefore, can print or printed encoded image with carbon black color ink or carbon containing powdered black ink, ink.This kind of image can meet the demand of identification instrument to peculiar spectrum infrared imaging, can crawled and parsing.
Preferably, under printing condition, also can use nature colour generation for the invisible or invisible special ink of naked eyes, this absorption of inks peculiar spectrum infrared light, but do not absorb visible ray in naked eyes visible wavelength region, this ink has best false proof and visual effect.Under general light condition, cannot be identified by naked eyes.
Complete coded image solidify after, need identification equipment that information is wherein extracted and discharge man-machine interaction signal, to reach the effect discriminating one's identification.
Use identification equipment to grab and solidify after the coded image of motor vehicle driving license, can to coded image, resolve according to coding rule, thereby extract the wherein anti-counterfeiting information of storage.According to coding rule, decoding chip in identification equipment judges the image capturing according to initialize program, if meet the triggering rule of coding, starts coded image to resolve, clear out and be implanted to data in coding, these data are as the foundation that triggers anti-counterfeiting information.
The anti-counterfeiting information triggering can be the fix information being preset in equipment, and in such cases, the data that parse by coded image can directly be transferred the fix information in the equipment of being pre-stored in, and directly reports out by modes such as audio frequency, videos.
Preferably, the anti-counterfeiting information of triggering can be also the Internet resources of transferring by equipment.In such cases, the data that parse by coded image are connected and are pointed to particular network address database by network, and database is received after data, according to preset rules, to equipment, pushes specific anti-counterfeiting information, reports afterwards by equipment.Not default anti-counterfeiting information in equipment of this kind of mode, has higher security.
Equipment is reported after anti-counterfeiting information, according to the information of reporting and motor vehicle driving license content information to recently judging the true and false of certificate.The information that can be used as judgment basis has the relevant content information of motor vehicle driving license to have: card number, name, address, first neck card day, standard drive type, the term of validity and issuing unit etc.
Preferably, if used, have the identification equipment of video capability, photo that can also be by the identification of driver's license encoded surface image is extracted to driver is to examine contrast.
As shown in Figure 3, the identification mode that comes into force is as follows:
As shown in step 301, by vision, the content information of motor vehicle driving license is obtained.
As shown in step 302, use identification equipment to identify motor vehicle driving license, as do not identified, do not have anti-counterfeiting information to report, certificate is false, as reported anti-counterfeiting information, compares with certificate content information.
As shown in step 303, the anti-counterfeiting information that equipment is reported, as compared with the content of motor vehicle driving license, if result conforms to, can judge that this certificate is as true.
As shown in step 304, the anti-counterfeiting information that equipment is reported, as compared with the content of motor vehicle driving license, if result does not conform to, can judge that this certificate is as vacation.
The image false-proof recognition methods that is applied to motor vehicle driving license that the embodiment of the present invention provides.Can be by this kind of mode coded image printing or print on motor vehicle driving license surface, and by the identification of identification equipment, carry out the extraction of information.This invention has improved the contrasted approach of motor vehicle driving license content information, can effectively prevent that certificate from being true and content is false faking.Because this sign can not be taken off or copy by force, improved false proof security simultaneously, guaranteed that the appearance of motor vehicle driving license does not have large destruction simultaneously.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (8)
1. be applied to the image false-proof recognition methods of motor vehicle driving license, it is characterized in that:
Apply a kind of coded image with logic coding function as anti-counterfeiting information storage unit;
Coded image generates according to encoding law by software, in generative process, according to the anti-counterfeiting information of implanting, produces and has the electronic image that concrete specific coding is arranged;
Coded image is cured in motor vehicle driving license surface by the mode of printing or print;
Image lattice is cured after printed medium surface, in a kind of mode of printing mark, presents;
This graph code image can correctly be identified by a kind of authentication terminal equipment, and extracts anti-counterfeiting information wherein.
2. the image false-proof recognition methods that is applied to motor vehicle driving license according to claim 1, is characterized in that: coded image is to be originated as printing or printing by electrical patterns, and the electrical patterns of generation can regulate size as required.
3. the image false-proof recognition methods that is applied to motor vehicle driving license according to claim 1, it is characterized in that: the coding of this coded image has the ability of storage motor vehicle driving license anti-counterfeiting information, and the size of stored message capability depends on the size of coded system and anti-counterfeiting mark effective coverage.
4. the image false-proof recognition methods that is applied to motor vehicle driving license according to claim 1, is characterized in that: this coded image solidifies can be identified recognition of devices parsing after motor vehicle driving license, and gets the anti-counterfeiting information being stored in coding.
5. the image false-proof recognition methods that is applied to motor vehicle driving license according to claim 1, is characterized in that: electrical patterns cannot directly solidify on motor vehicle driving license, need first by the mode of printing or print, solidify on motor vehicle driving license.
6. the image false-proof recognition methods that is applied to motor vehicle driving license according to claim 1, is characterized in that: directly the printing of printed codes image or printing material need contain the ultrared active principle of absorption peculiar spectrum.
7. the image false-proof recognition methods that is applied to motor vehicle driving license according to claim 4, it is characterized in that: the anti-counterfeiting information after identifying and resolve by identification equipment, can be directly to prestore to be stored in the motor vehicle driving license relevant information in identification equipment, can be also identification equipment that transfer with Internet resources motor vehicle driving license content matching.
8. the image false-proof recognition methods that is applied to motor vehicle driving license according to claim 7, it is characterized in that: the content information that the anti-counterfeiting information obtaining by identification equipment need to present with motor vehicle driving license surface compares, whether to obtain motor vehicle driving license as genuine judged result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310720607.2A CN103761555A (en) | 2013-04-16 | 2013-12-24 | Image anti-counterfeiting recognition method applied to motor vehicle driving licenses |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310129739.8 | 2013-04-16 | ||
| CN201310129739 | 2013-04-16 | ||
| CN201310720607.2A CN103761555A (en) | 2013-04-16 | 2013-12-24 | Image anti-counterfeiting recognition method applied to motor vehicle driving licenses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103761555A true CN103761555A (en) | 2014-04-30 |
Family
ID=50528789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310720607.2A Pending CN103761555A (en) | 2013-04-16 | 2013-12-24 | Image anti-counterfeiting recognition method applied to motor vehicle driving licenses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103761555A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464289A (en) * | 2014-12-04 | 2015-03-25 | 赵常维 | Method for recognizing driving information when vehicle breaks rules and regulations |
| CN105320952A (en) * | 2015-10-15 | 2016-02-10 | 广东广信通信服务有限公司 | OCR based identification method for driving license information |
| CN113449686A (en) * | 2021-07-19 | 2021-09-28 | 成都新希望金融信息有限公司 | Identification method, device, equipment and medium for identity card counterfeiting |
| CN113672964A (en) * | 2021-08-31 | 2021-11-19 | 大连市公安局 | Certificate inspection method based on standard sample feature database |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270105A (en) * | 1999-04-13 | 2000-10-18 | 石伟 | Antiforge method for certificate and its product |
| CN1325093A (en) * | 2000-05-19 | 2001-12-05 | 贵州七彩光隐形防伪技术有限公司 | Prepn. of color invisible graph regression anti-fake product |
| CN1355500A (en) * | 2000-11-28 | 2002-06-26 | 廖振强 | 2D chaotic graphics method for security and antiforge purpose |
| CN1359503A (en) * | 1998-12-30 | 2002-07-17 | 刘超 | Invisible graphics context identifying system and fabrication method thereof |
| CN1567340A (en) * | 2003-06-23 | 2005-01-19 | 中国科学院研究生院 | False proof bill, false proof method of bill and system thereof |
| CN102110224A (en) * | 2009-12-25 | 2011-06-29 | 金辉文 | Method for preventing counterfeiting and preventing goods from fleeing by intelligent code |
| CN102117511A (en) * | 2010-01-05 | 2011-07-06 | 中钞国鼎投资有限公司 | Print anti-counterfeiting detection method and equipment |
-
2013
- 2013-12-24 CN CN201310720607.2A patent/CN103761555A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1359503A (en) * | 1998-12-30 | 2002-07-17 | 刘超 | Invisible graphics context identifying system and fabrication method thereof |
| CN1270105A (en) * | 1999-04-13 | 2000-10-18 | 石伟 | Antiforge method for certificate and its product |
| CN1325093A (en) * | 2000-05-19 | 2001-12-05 | 贵州七彩光隐形防伪技术有限公司 | Prepn. of color invisible graph regression anti-fake product |
| CN1355500A (en) * | 2000-11-28 | 2002-06-26 | 廖振强 | 2D chaotic graphics method for security and antiforge purpose |
| CN1567340A (en) * | 2003-06-23 | 2005-01-19 | 中国科学院研究生院 | False proof bill, false proof method of bill and system thereof |
| CN102110224A (en) * | 2009-12-25 | 2011-06-29 | 金辉文 | Method for preventing counterfeiting and preventing goods from fleeing by intelligent code |
| CN102117511A (en) * | 2010-01-05 | 2011-07-06 | 中钞国鼎投资有限公司 | Print anti-counterfeiting detection method and equipment |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464289A (en) * | 2014-12-04 | 2015-03-25 | 赵常维 | Method for recognizing driving information when vehicle breaks rules and regulations |
| CN105320952A (en) * | 2015-10-15 | 2016-02-10 | 广东广信通信服务有限公司 | OCR based identification method for driving license information |
| CN105320952B (en) * | 2015-10-15 | 2018-06-05 | 广东广信通信服务有限公司 | A kind of driving license information identifying method based on OCR |
| CN113449686A (en) * | 2021-07-19 | 2021-09-28 | 成都新希望金融信息有限公司 | Identification method, device, equipment and medium for identity card counterfeiting |
| CN113672964A (en) * | 2021-08-31 | 2021-11-19 | 大连市公安局 | Certificate inspection method based on standard sample feature database |
| CN113672964B (en) * | 2021-08-31 | 2024-01-23 | 大连市公安局 | Certificate checking method based on standard sample feature database |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7025269B2 (en) | Barcodes including embedded security features and space saving interleaved text | |
| US5982956A (en) | Secure method for duplicating sensitive documents | |
| JPH03185585A (en) | Method and device for deciding validity of id card | |
| CN103761555A (en) | Image anti-counterfeiting recognition method applied to motor vehicle driving licenses | |
| WO2008084315A2 (en) | Secure identification document and method for securing such a document | |
| CN108790467A (en) | The manufacturing method of safe inserts for certificate and the safe inserts for certificate | |
| CN103729611A (en) | Image anti-counterfeiting recognition method applied to product packaging | |
| CN108790465B (en) | Security insert with UV coating for documents and method for producing a security insert with UV coating for documents | |
| CN103745179A (en) | Image anti-counterfeiting identification method applied in labels | |
| CN103679242A (en) | Image anti-counterfeit recognition method applied to financial receipt | |
| CN103745250A (en) | Identification system applied to card and certificate image anti-forgery method | |
| US11167581B2 (en) | Authentication hologram | |
| JP4352168B2 (en) | Halftone image data authentication program, halftone print authentication system, and halftone image data authentication system | |
| CN108790466B (en) | Security insert for a document having a recess and method for producing a security insert for a document having a recess | |
| CN103729670A (en) | Image anti-counterfeiting recognition method for vehicle license | |
| CA2402603C (en) | Generating a non-reproducible printed image | |
| CN101901330A (en) | Electric power metering seal anti-counterfeit method | |
| CN103729672A (en) | Image anti-counterfeiting recognition method applied to bills | |
| CN103729609A (en) | Anti-counterfeiting recognition system for taxation bill | |
| CN103729933A (en) | Anti-counterfeiting recognition system for civil aviation travel itinerary bill | |
| CN102673220A (en) | Anti-counterfeiting certificate capable of distinguishing truth and falsity through checking micro image codes and verification codes | |
| CN103729671A (en) | Image anti-counterfeiting recognition method for transportation bill | |
| EP2878454A1 (en) | Secure document and method of production of said secure document | |
| CN103745249A (en) | Image anti-forgery identification method applied to legal personality license | |
| Koltai et al. | Enhanced optical security by using information carrier digital screening |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140430 |